Coordinate input instrument



FIG. 1 is a front perspective view of a coordinate input instrument according to a representative embodiment of my new design;

FIG. 2 is a rear perspective view of the coordinate input instrument shown in FIG. 1;

FIG. 3 is a side view of the coordinate input instrument shown in FIG. 1, the side opposite of the side shown in FIG. 3 being a mirror image thereof and therefore not shown;

FIG. 4 is a front view of the coordinate input instrument shown in FIG. 1;

FIG. 5 is a rear view of the coordinate input instrument shown in FIG. 1;

FIG. 6 a top view of the coordinate input instrument shown in FIG. 1; and,

FIG. 7 is a bottom view of the coordinate input instrument shown in FIG. 1.

The broken lines show portions of the coordinate input instrument which form no part of the claimed design. 

CLAIM The ornamental design for a coordinate input instrument, as shown and described. 